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@ARTICLE{Fischer:902341,
      author       = {Fischer, Liudmila and Neuhaus, Kerstin and Schmidt,
                      Christina and Ran, Ke and Behr, Patrick and Baumann, Stefan
                      and Mayer, Joachim and Meulenberg, Wilhelm A.},
      title        = {{P}hase formation and performance of solid state reactive
                      sintered {C}e 0.8 {G}d 0.2 {O} 2− δ –{F}e{C}o 2 {O} 4
                      composites},
      journal      = {Journal of materials chemistry / A},
      volume       = {10},
      issn         = {2050-7496},
      address      = {London ˜[u.a.]œ},
      publisher    = {RSC},
      reportid     = {FZJ-2021-04190},
      pages        = {2412-2420},
      year         = {2022},
      abstract     = {Reactive sintering of dual phase composites for use as
                      oxygen transport membranes is a promising method enabling
                      lower sintering temperatures as well as low-cost raw
                      materials. Ce0.8Gd0.2O2−δ–FeCo2O4 composites with
                      different nominal weight ratios from 60 : 40 to
                      90 : 10 are processed by reactive sintering of
                      commercial Ce0.8Gd0.2O2−δ, Fe2O3, and Co3O4 powders. The
                      phases formed in situ during sintering are investigated
                      qualitatively and quantitatively by means of XRD and
                      Rietveld refinement as well as transmission electron
                      microscopy. Besides gadolinia-doped ceria, two Fe/Co-spinel
                      phases are in equilibrium in agreement with the phase
                      diagram. Moreover, a donor-doped GdFeO3-based perovskite
                      (Gd,Ce)(Fe,Co)O3 showing electronic conductivity is formed.
                      Due to these intense phase reactions, the composition of
                      each individual phase is assessed for all composites and
                      their functional properties are discussed. The oxygen
                      permeation performances of the composites are measured
                      including their dependence on temperature and the potential
                      limiting steps are discussed. The results reveal that the
                      phase reactions support the formation of the desired mixed
                      ionic electronic conductivity achieving percolation at low
                      nominal spinel contents. The specific microstructure plays
                      an extremely important role in the membrane performance and,
                      thus, special attention should be paid to this in future
                      research about dual phase membranes.},
      cin          = {IEK-1 / IEK-12 / ER-C-2},
      ddc          = {530},
      cid          = {I:(DE-Juel1)IEK-1-20101013 / I:(DE-Juel1)IEK-12-20141217 /
                      I:(DE-Juel1)ER-C-2-20170209},
      pnm          = {1232 - Power-based Fuels and Chemicals (POF4-123) / 5353 -
                      Understanding the Structural and Functional Behavior of
                      Solid State Systems (POF4-535) / DFG project 387282673 - Die
                      Rolle von Grenzflächen in mehrphasigen Ceroxid-basierten
                      Membranen für den Einsatz in Membranreaktoren},
      pid          = {G:(DE-HGF)POF4-1232 / G:(DE-HGF)POF4-5353 /
                      G:(GEPRIS)387282673},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000712912400001},
      doi          = {10.1039/D1TA05695F},
      url          = {https://juser.fz-juelich.de/record/902341},
}